Hydrogen Bonding

Q.

Is sulfur dioxide a dipole force?

Q.

Why charge carriers are not present in depletion region ?

Q. Which of the following statement is correct regarding dipole-dipole force?

1. The molecules should have hydrogen
2. The molecules should have carbon
3. Dipole-dipole force exists in every molecule
4. The molecules need to be very close to each other

Q. Which of the following exhibits H-bonding?

1. $C{H}_4$
2. $H_{2}Se$
3. $N_2{H}_4$
4. $H_{2}S$

Q.

Are nucleic acids polar or non-polar?

Q. Match the following substances with their intermolecular forces:

List-I	List-II
(i) $C{H}_4$	(p) Dispersion Force
(ii) $NC{l}_3$	(q) Hydrogen Bonding
(iii) $C_4{H}_{9}OH$	(r) Dipole-dipole

1. (i) - (p), (ii) - (q), (iii) - (r)
2. (i) - (q) , (ii) - (p) , (iii) - (r)
3. (i) - (p) , (ii) - (r), (iii) - (q)
4. (i) - (r) , (ii) - (q) , (iii) - (p)

Q. The strongest hydrogen bonding is present in:

1. $HF$
2. $HCl$
3. $HBr$
4. $HI$

Q. Which of the following factors is responsible for van der Waals forces ?

1. Instantaneous dipole-induced dipole interaction
2. Dipole-induced dipole interaction and ion-induced dipole interaction
3. Dipole-dipole interaction and ion-induced dipole interaction
4. All of these.

Q. Maximum number of hydrogen bonds formed by a $H_{2}O$ molecule is _____

1. 4

2. 2

3. 1

4. 0

Q.

Among the following compounds $\mathrm{A}$ and $\mathrm{B}$ with the molecular formula ${\mathrm{C}}_9{\mathrm{H}}_{18}{\mathrm{O}}_3$, $\mathrm{A}$ has higher boiling point than $\mathrm{B}$. The possible structures of $\mathrm{A}$ and $\mathrm{B}$ are:

1. 

2. 

3. 

4. 

Q. Which pair of molecules has the strongest dipole–dipole interaction?

1. $N{H}_3$ and $N{H}_3$
2. $C{H}_4$ and $C{H}_4$
3. $C{O}_2$ and $C{O}_2$
4. $N{H}_3$ and $C{H}_4$

Q. The concept that explains why $o-$nitrophenol is more volatile than $p-$nitrophenol is .

1. resonance
2. hyperconjugation
3. hydrogen bonding

Q. Among the following mixtures, dipole-dipole as the major interaction, is present in?

1. Benzene and carbon tetrachloride
2. Benzene and ethanol
3. Acetonitrile and acetone
4. $KCl$ and water

Q. Which property is not due to H-bonding?

1. High boiling point of water
2. High viscosity of glycerol
3. Solubility of ammonia in water
4. Polar nature of halogen acid

Q. Which of the following statement is correct regarding dipole-dipole force?

1. The molecules should have hydrogen
2. The molecules should have carbon
3. Dipole-dipole force exists in every molecule
4. The molecules need to be very close to each other

Q. Low density of ice compared to water is due to:

1. Dipole - induced dipole interactions
2. Induced dipole - induced dipole interactions
3. Hydrogen bonding interactions
4. None of the above

Q. Which one of the following compounds exhibit intra-molecular hydrogen bonding?

1. $H_2{O}_2$
2. $HCN$
3. Cellulose
4. Concentrated acetic acid

Q.

The $|\underset{–}{HFH}$ bond angle in the following structure

1. ${130.5}^0$

2. ${109}^0{28}^{\prime }$

3. ${116}^0$

4. ${103}^0$

Q. The maximum number of H-bonds that can be formed by a water molecule is:

1. 2
2. 3
3. 4
4. 6

Q. Which of the follownig is/are examples of polar molecular solids?

1. $NaCl\left(s\right)$
2. $N{H}_3\left(s\right)$
3. $HCl\left(s\right)$
4. $S{O}_2\left(s\right)$

Q. Low density of ice compared to water is due to:

1. Dipole - induced dipole interactions
2. Induced dipole - induced dipole interactions
3. Hydrogen bonding interactions
4. None of the above

Q. The nature of inter-molecular forces among benzene molecules is:

1. Dispersion forces
2. Hydrogen Bonding
3. Ion-dipole interaction
4. Dipole-dipole interaction

Q. In which molecule is van der Waals force most likely to be important in determining the melting point and the boiling point?

1. $ICl$
2. $B{r}_2$
3. $H_{2}S$
4. $CO$

Q. The intermolecular force of attraction present between $N{H}_3$ and $C_6{H}_6$ is:

1. Dipole-dipole interaction
2. Dipole-induced dipole interaction
3. London dispersion force
4. H-bonding

Q. London forces of attraction works in:

1. Polar molecule
2. Non-polar molecule
3. Only in polar molecule
4. None of these

Q. Among the following mixtures, dipole-dipole as the major interaction, is present in?

1. Benzene and carbon tetrachloride
2. Benzene and ethanol
3. Acetonitrile and acetone
4. $KCl$ and water

Q. Orthoboric acid behaves as weak monobasic acid in water giving $H_3{O}^{+}$ and

1. $H_{2}B{O}_2^{-}$
2. $H_{2}B{O}_3^{-}$
3. $\left[B\right(OH{)}_4{]}^{-}$
4. $\left[B\right(OH{)}_4{]}^{+}$

Q. Study the figures given and identify the type of interaction between XY−XY molecules.

1. Dipole-dipole interaction
2. Dipole-induced dipole interaction
3. Dispersion forces
4. Ion-dipole interaction

Q. Which of the following oxoacid of sulphur has $-O-O-$ linkage ?

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1. $H_2{S}_2{O}_7$, pyrosulphuric acid
2. $H_2{S}_2{O}_8$, peroxodisulphuric acid
3. $H_{2}S{O}_4$, sulphuric acid
4. $H_{2}S{O}_3$, sulphurous acid

Q. When ice-cubes are pressed together, they fuse because of .

1. Vander Waal forces
2. H - bonding
3. Covalent attraction